226 lines
6.7 KiB
C++
226 lines
6.7 KiB
C++
/*
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* Copyright (C) 2022 Tianjin KYLIN Information Technology Co., Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*
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**/
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#include <QCoreApplication>
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#include <QTimer>
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#include <QFileInfo>
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#include <QScreen>
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#include <QDebug>
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#include <QString>
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#include <QFileInfo>
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#include <QCursor>
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#include <QPalette>
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#include <QDesktopWidget>
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#include <QApplication>
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#include <QWidget>
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#include <QGSettings/QGSettings>
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extern "C" {
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#include <X11/Xatom.h>
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#include <X11/Xlib.h>
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}
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#define XSETTINGS_SCHEMA "org.ukui.SettingsDaemon.plugins.xsettings"
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#define MOUSE_SCHEMA "org.ukui.peripherals-mouse"
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#define SCALING_KEY "scaling-factor"
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#define CURSOR_SIZE "cursor-size"
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#define CURSOR_THEME "cursor-theme"
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/* 过滤低分辨率高缩放比情况 */
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void screenScaleJudgement(QGSettings *settings)
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{
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qreal scaling = qApp->devicePixelRatio();
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double scale;
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scale = settings->get(SCALING_KEY).toDouble();
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if (scale > 1.25) {
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bool state = false;
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bool mScale = false;
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for (QScreen *screen : QGuiApplication::screens()) {
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int width = screen->geometry().width() * scaling;
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int height = screen->geometry().height() * scaling;
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if (width < 1920 && height < 1080) {
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state = true;
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} else if (width == 1920 && height == 1080 && scale > 1.5) {
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state = true;
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} else if (width > 2560 && height > 1440) {
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mScale = true;
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}
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}
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if (state && !mScale) {
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QGSettings *mGsettings = new QGSettings(MOUSE_SCHEMA);
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mGsettings->set(CURSOR_SIZE, 24);
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settings->set(SCALING_KEY, 1.0);
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delete mGsettings;
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}
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}
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}
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/* 设置DPI环境变量 */
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void setXresources(int dpi)
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{
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Display *dpy;
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QGSettings *mouse_settings = new QGSettings(MOUSE_SCHEMA);
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QString str = QString("Xft.dpi:\t%1\nXcursor.size:\t%2\nXcursor.theme:\t%3\n")
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.arg(dpi)
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.arg(mouse_settings->get(CURSOR_SIZE).toInt())
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.arg(mouse_settings->get(CURSOR_THEME).toString());
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dpy = XOpenDisplay(NULL);
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XChangeProperty(dpy, RootWindow(dpy, 0), XA_RESOURCE_MANAGER, XA_STRING, 8,
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PropModeReplace, (unsigned char *) str.toLatin1().data(), str.length());
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XCloseDisplay(dpy);
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qDebug() << "setXresources：" << str;
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delete mouse_settings;
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}
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/* 判断文件是否存在 */
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bool isFileExist(QString XresourcesFile)
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{
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QFileInfo fileInfo(XresourcesFile);
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if (fileInfo.isFile()) {
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qDebug() << "File exists";
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return true;
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}
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qDebug() << "File does not exis";
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return false;
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}
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/* 编写判断标志文件，更改 鼠标/DPI 配置大小*/
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void writeXresourcesFile(QString XresourcesFile, QGSettings *settings, double scaling)
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{
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QFile file(XresourcesFile);
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QString content = QString("Xft.dpi:%1\nXcursor.size:%2").arg(96.0 * scaling).arg(24.0 * scaling);
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QByteArray str = content.toLatin1().data();
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file.open(QIODevice::ReadWrite | QIODevice::Text);
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file.write(str);
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file.close();
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QGSettings *Font = new QGSettings("org.ukui.font-rendering");
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QGSettings *mouse_settings = new QGSettings(MOUSE_SCHEMA);
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Font->set("dpi", 96.0);
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settings->set(SCALING_KEY, scaling);
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mouse_settings->set(CURSOR_SIZE, scaling * 24.0);
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qDebug() << " writeXresourcesFile: content = " << content
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<< " scalings = " << settings->get(SCALING_KEY).toDouble()
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<< "cursor size = " << mouse_settings->get(CURSOR_SIZE).toInt();
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delete Font;
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delete mouse_settings;
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}
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/* 判断是否为首次登陆 */
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bool isTheFirstLogin(QGSettings *settings)
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{
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QString homePath = getenv("HOME");
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QString XresourcesFile = homePath+"/.config/xresources";
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QString Xresources = homePath+"/.Xresources";
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qreal scaling = qApp->devicePixelRatio();
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bool zoom1 = false, zoom2 = false, zoom3 = false;
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double mScaling;
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bool xres, Xres;
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Xres = isFileExist(Xresources);
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xres = isFileExist(XresourcesFile); //判断标志文件是否存在
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if (xres && !Xres) {
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return false;
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} else if (xres && Xres) {
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QFile::remove(Xresources);
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return false;
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} else if (Xres && !xres) {
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QFile::rename(Xresources, XresourcesFile);
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return false;
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}
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for (QScreen *screen : QGuiApplication::screens()) {
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int width = screen->geometry().width() * scaling;
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int height = screen->geometry().height() * scaling;
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if (width <= 1920 && height <= 1080) {
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zoom1 = true;
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} else if (width > 1920 && height > 1080 && width <= 2560 && height <=1500) {
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zoom2 = true;
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} else if (width > 2560 && height > 1440) {
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zoom3 = true;
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}
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}
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if (zoom1) {
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mScaling = 1.0;
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} else if (!zoom1 && zoom2) {
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mScaling = 1.5;
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} else if (!zoom1 && !zoom2 && zoom3) {
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mScaling = 2.0;
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}
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writeXresourcesFile(XresourcesFile, settings, mScaling);
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return true;
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}
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/* 配置新装系统、新建用户第一次登陆时，4K缩放功能*/
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void setHightResolutionScreenZoom()
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{
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QGSettings *settings;
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double dpi;
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int ScreenNum = QApplication::screens().length();
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if (!QGSettings::isSchemaInstalled(XSETTINGS_SCHEMA) || !QGSettings::isSchemaInstalled("org.ukui.font-rendering") ||
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!QGSettings::isSchemaInstalled(MOUSE_SCHEMA)) {
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qDebug() << "Error: ukui-settings-daemon's Schema is not installed, will not setting dpi!";
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delete settings;
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return;
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}
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settings = new QGSettings(XSETTINGS_SCHEMA);
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if (isTheFirstLogin(settings)) {
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qDebug() << "Set the default zoom value when logging in for the first time.";
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goto end;
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}
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/* 过滤单双屏下小分辨率大缩放值 */
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if (ScreenNum > 1) {
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goto end;
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}
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screenScaleJudgement(settings);
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end:
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dpi = 0.0;
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dpi = settings->get(SCALING_KEY).toDouble() * 96.0;
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setXresources(dpi);
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delete settings;
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}
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int main(int argc, char *argv[])
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{
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QApplication a(argc, argv);
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setHightResolutionScreenZoom();
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return 0;
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}
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